Pur•Chek
™
Pro
Instruction 2100-9001
9
4.2 Turning On the Unit
Connect the included AC power supply to the 12VDC power input jack on the back of the unit. Plug in the AC
power supply to a 110-220 VAC outlet.
NOTE:
If the optional battery module is installed and charged, the AC power supply is not
required.
Press the left, soft key, power button and the splash screen shown in Figure 1 will appear for approximately
three seconds, followed by the warm up screen for three minutes (Figure 2). After the warm up, the calibration
screen shown in Figure 3 will appear.
SOFTWARE VERSION
XXX XX.XXX
WARMING UP
PLEASE WAIT
READY TO AIR CAL
1. DISCONNECT
HOSE FROM
TANK
2. PRESS CAL TO
START
OFF HELP CAL
Figure 1.
Figure 2.
Figure 3.
4.3 Calibration
Each time the Pur•Chek™ Pro begins a new test cycle it must fi rst self-calibrate. The calibration takes 95
seconds (Figure 4) and brings fresh air into the unit via an internal pump. This fresh air purges any excess
refrigerant from the unit and ensures accurate test results. Calibration requires that the hose be disconnected
from the refrigerant cylinder or air conditioning system. The calibration of the unit will expire after approximately
fi ve minutes of inactivity. If this occurs, the screen shown in Figure 5 will be displayed requiring the calibration
to be initiated again.
CALIBRATING
THIS WILL ONLY
TAKE 95 SECONDS
CALIBRATION TIME
HAS EXPIRED
DISCONNECT HOSE
FROM TANK AND
PRESS CAL TO
RECALIBRATE
CAL
Figure 4.
Figure 5.
After calibrating, the unit will display the screen shown in Figure 6. Connect the hose to the tank and press test.
The Pur•Chek™ Pro will display the screen shown in Figure 7. If you wish to change any of the factory default
settings, refer to Section 5.
READY
TESTING
PLEASE WAIT
ANALYZING THE
REFRIGERANT
1. CONNECT HOSE
2. OPEN VALVE
3. PRESS TEST
HELP
CAL
Figure 6.
Figure 7.
